Split-screen on PC

Slime Rancher

Up to 8 players on one PC, with controllers, keyboard and mouse or several keyboards and mice.

8Verified handler

Handler “Slime Rancher Multiplayer Mod” by Talos91, version 2

P4+4 more players

What works

With Nucleus Co-op, up to 8 players can play Slime Rancher together on one PC, each in their own part of the screen, with controllers, keyboard and mouse or several keyboards and mice. The free community handler “Slime Rancher Multiplayer Mod” by Talos91 does the setup and was checked by hub moderators: version 2, updated 16 Feb 2025. Slime Rancher is a shooter, simulation and strategy game from 2017.

Players8
ControllersSupported
Keyboard and mouseSupported
Several keyboards and miceOne per player
Hub moderatorsVerified

How to play Slime Rancher split screen on PC

Get Nucleus Co-op
Download Nucleus Co-op, free for Windows 10 and 11, and unzip it into its own folder, for example C:\NucleusCo-op. There is no installer.
Keep it out of Program Files, your user folder and OneDrive.
Download Nucleus Co-op
Install the Slime Rancher handler
In Nucleus Co-op, search the Hub for Slime Rancher and install its handler, or download the handler file from this page and drop it on the Nucleus window. Then show Nucleus where Slime Rancher is installed.
Download the handler file (.nc)
Take a seat
Each player presses a button on their own controller to join and takes a spot on the screen. Pick a layout that fits your players.
Playing with several keyboards and mice? Press End once everything is in place to give each window its own cursor.
Launch and connect
Press Launch: Nucleus opens one copy of Slime Rancher per player and lays the windows out on your screen. Then link them in game, usually one player hosts a LAN or online session and the others join it. The handler notes say how.

What you need

A Windows 10 or 11 PC
Nucleus Co-op runs on Windows only. System requirements
Slime Rancher for Windows
Installed on that PC. Nucleus starts every player's window from that one install.
Nucleus Co-op, free
With .NET Framework 4.7.2 or later and the Visual C++ 2015–2022 runtimes (x86 and x64). Download
Something to play with
One controller per player, or one keyboard and mouse per player. Controllers · Keyboards and mice
A PC that can run 8 copies
Each player runs their own copy of Slime Rancher, so the PC carries several times the usual load. Lower the graphics settings if it struggles. Performance tips
A multiplayer mode
Nucleus links the windows through the game's own LAN or online mode; the handler takes care of it.

Handler notes

Requires the latest standalone version of the Slime Rancher Multiplayer mod by Saty (SRMP) to be installed in your game files: https://satypardus.itch.io/slime-rancher-multiplayer-mod
Be careful about your regular saves inside AppData\LocalLow\Monomi Park\Slime Rancher as the SRMP mod could modify them. Remember that SRMP is still in beta so weird things can happen.
Split-screen setup.
Set your main game to windowed and in the correct custom resolution in the game options before running this for the instances to resize correctly. If you want the instances to resize correctly you need to create custom resolutions in your AMD/Nvidia/Intel panel (for example for a 1920x1080 monitor add custom resolutions like: 960x1080, 960x540, 1920x540 etc.) so the game can see them and you can select them in the game options. If the res does not match the window size the game will move the window to the center. You can also change the res in the game then use CTRL+R to reposition the instances. If your graphics panel does not support adding custom resolutions use the app Custom Resolution Utility.
Start a game in one instance and host a game using the SRMP mod menu that appears when you press start/escape, in the main menu join to the host using the server code or the games in the same network option, alt-tab between instances to use the keyboard and mouse to connect, pause in all instances to use the cursor correctly otherwise it gets stuck, if you get a dlc mismatch error when joining just click on manage dlc in the main menu then try to join again.
If you use a keyboard/m instance disable the gamepad input for that instance in the game options once you are in-game, make sure it is enabled for the gamepads instances. If you use keyboards/mice after all the instances have launched, resized and positioned correctly, press the END key once to lock the input for all instances to have their own cursor, you need to left click each mouse to make the emulated cursors appear after locking the input. Press the END key again to unlock the input when you finish playing.
Read the FAQ if you have any further questions and want to know more.
Handler by Talos91. Please support the Nucleus Co-op team if you like my Nucleus handler work.

About Slime Rancher

Slime Rancher is a charming, first-person, sandbox experience. Play as Beatrix LeBeau: a plucky, young rancher who sets out for a life a thousand light years away from Earth on the 'Far, Far Range.' Each day will present new challenges and risky opportunities as you attempt to amass a great fortune in the business of slime ranching. Collect colorful slimes, grow crops, harvest resources, and explore the untamed wilds through the mastery of your all-purpose vacpack.

Summary from IGDB